Ti Tree Gas to Energy Project

Ti Tree Gas to Energy Project is a landfill gas project with coordinates placing its registration point near the suburb of Silkstone in Ipswich, Queensland, while its primary physical operations are based at the Ti Tree Bioenergy Facility in Willowbank, approximately 15km south of the city centre. It was registered in November 2012, and the exact project area size is unknown.

Landfill gas projects involve capturing and combusting methane generated by decomposing organic waste. Standard requirements mandate the use of a dedicated gas collection system and a combustion device, such as a flare or an internal combustion engine, to destroy the methane. Abatement is calculated based on the volume of methane sent to the combustion device minus any baseline regulatory requirements.

The Willowbank and greater Ipswich area is traditionally known for historic open-cut coal mining, waste management, and agricultural grazing operations. The region experiences a subtropical climate with moderate-to-high rainfall, and its soils are predominantly heavy, reactive clays associated with underlying sedimentary rock and historical coal measures.

This transitioning project captures and combusts gas generated at the landfill from both legacy and non-legacy waste, having transitioned from a previously revoked methodology. Operated by Veolia Environmental Services, the facility uniquely utilizes a 37-million cubic metre void left over from a previous open-cut coal mine. Alongside reducing greenhouse gas emissions equivalent to taking 90,000 cars off the road, the methane captured by the bioreactor technology generates enough green electricity to power roughly 12,000 homes. The project also successfully completed a major carbon abatement contract (CAC254087) in August 2022, delivering over 282,000 tonnes of abatement. Furthermore, it supports the local community through an annual "Ti Tree Bioenergy Funding" program, providing payments to the Ipswich City Council for environmental improvements such as local koala reserves, weed management, and wildlife corridor plantings.